Google Maps sails down the Colorado River (pictures)

The Street View trekker winds its way through the Grand Canyon, past the Redwall Cavern, Vulcan's Anvil, and big horn sheep.

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Google Maps sails down the Colorado River

Google loaded its Street View trekker onto a raft and set sail down the country's most endangered river: the Colorado River. This journey takes in views of the Grand Canyon and all sorts of other natural and geological sights, like the 36-mile rapids seen here.

Rambling river

The Colorado River has been around for more than 6 million years, carving 1,450 miles down the Rocky Mountains, through the deserts of Utah, Arizona, and Nevada, and emptying into the Gulf of California in Mexico. The Grand Canyon is so massive that it can be seen from outer space. Yet, because of its being excessively dammed, diverted, and plumbed, the river has been deemed "America's most endangered river."

If Spock had a hammer

Tapped out

Because of being overly dammed and diverted, by the time the Colorado River reaches the Gulf of California in Mexico it's barely a trickle. Seen here is evidence of the river’s decline with sedimentation along the river’s edge down by Lake Mead.